LTC2305

PRODUCTION

2-Channel, 12-Bit ADCs with I2C Compatible Interface

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Overview

  • 12-Bit Resolution
  • Low Power: 1.5mW at 1ksps, 35μW Sleep Mode
  • 14ksps Throughput Rate
  • Internal Reference
  • Low Noise: SNR = 73.5dB
  • Guaranteed No Missing Codes
  • Single 5V Supply
  • 2-wire I2C Compatible Serial Interface with 9 Addresses Plus One Global for Synchronization
  • Fast Conversion Time: 1.3μs
  • 1-Channel (LTC2301) and 2-Channel (LTC2305) Versions
  • Unipolar or Bipolar Input Ranges (Software Selectable)
  • Internal Conversion Clock
  • Guaranteed Operation from –40°C to 125°C (MSOP Package)
  • 12-Pin 4mm × 3mm DFN and 12-Pin MSOP Packages

The LTC2301/LTC2305 are low noise, low power, 1-/2-channel, 12-bit successive approximation ADCs with an I2C compatible serial interface. These ADCs include an internal reference and a fully differential sample-andhold circuit to reduce common mode noise. The LTC2301/ LTC2305 operate from an internal clock to achieve a fast 1.3μs conversion time.

The LTC2301/LTC2305 operate from a single 5V supply and draw just 300μA at a throughput rate of 1ksps. The ADC enters nap mode when not converting, reducing the power dissipation.

The LTC2301/LTC2305 are available in small 12-pin 4mm × 3mm DFN and 12-pin MSOP packages. The internal 2.5V reference further reduces PCB board space requirements.

The low power consumption and small size make the LTC2301/LTC2305 ideal for battery operated and portable applications, while the 2-wire I2C compatible serial interface makes these ADCs a good match for space-constrained systems.

Applications

  • Industrial Process Control
  • Motor Control
  • Accelerometer Measurements
  • Battery Operated Instruments
  • Isolated and/or Remote Data Acquisition
  • Power Supply Monitoring
LTC2305
2-Channel, 12-Bit ADCs with I2C Compatible Interface
Integral Nonlinearity vs Output Code (LTC2305) Product Package 1 Product Package 2 Product Package 3 Product Package 4
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Interface Transceivers & Isolators 1
LTM2883
PRODUCTION SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
Level Translators & Buffers 1
LTC4317
PRODUCTION Dual I2C/SMBus Address Translator
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Tools & Simulations

Linduino 3

Evaluation Kits

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schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1444A-B

LTC2305 Demo Board | 12-Bit, 2-Channnel I2C 14ksps ADC (Requires DC2026)

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Product Details

DC1444A-B: Demo Board for the LTC2305 2-Channel, 12-Bit ADCs with I2C Compatible Interface.
DC1444A-B
LTC2305 Demo Board | 12-Bit, 2-Channnel I2C 14ksps ADC (Requires DC2026)
DC1444A-B Demo Board DC1444A-B Demo Board DC1444A-B Demo Board DC1444A-B Demo Board DC1444A-A - Schematic

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